| /******************************************************************************* |
| * Copyright (c) 2010, 2018 Willink Transformations and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v2.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v20.html |
| * |
| * Contributors: |
| * E.D.Willink - initial API and implementation |
| * |
| * This file is copied from org.eclipse.ui.internal.ide.misc.ContainerContentProvider |
| *******************************************************************************/ |
| package org.eclipse.ocl.xtext.base.ui.ripoffs; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| import org.eclipse.core.resources.IContainer; |
| import org.eclipse.core.resources.IProject; |
| import org.eclipse.core.resources.IResource; |
| import org.eclipse.core.resources.IWorkspace; |
| import org.eclipse.core.runtime.CoreException; |
| import org.eclipse.jface.viewers.ITreeContentProvider; |
| import org.eclipse.jface.viewers.Viewer; |
| |
| /** |
| * Provides content for a tree viewer that shows only containers. |
| */ |
| public class ContainerContentProvider implements ITreeContentProvider { |
| private boolean showClosedProjects = true; |
| |
| /** |
| * Creates a new ContainerContentProvider. |
| */ |
| public ContainerContentProvider() { |
| } |
| |
| /** |
| * The visual part that is using this content provider is about |
| * to be disposed. Deallocate all allocated SWT resources. |
| */ |
| @Override |
| public void dispose() { |
| } |
| |
| /* |
| * @see org.eclipse.jface.viewers.ITreeContentProvider#getChildren(java.lang.Object) |
| */ |
| @Override |
| public Object[] getChildren(Object element) { |
| if (element instanceof IWorkspace) { |
| // check if closed projects should be shown |
| IProject[] allProjects = ((IWorkspace) element).getRoot() |
| .getProjects(); |
| if (showClosedProjects) { |
| return allProjects; |
| } |
| |
| ArrayList<IProject> accessibleProjects = new ArrayList<IProject>(); |
| for (int i = 0; i < allProjects.length; i++) { |
| if (allProjects[i].isOpen()) { |
| accessibleProjects.add(allProjects[i]); |
| } |
| } |
| return accessibleProjects.toArray(); |
| } else if (element instanceof IContainer) { |
| IContainer container = (IContainer) element; |
| if (container.isAccessible()) { |
| try { |
| List<IResource> children = new ArrayList<IResource>(); |
| IResource[] members = container.members(); |
| for (int i = 0; i < members.length; i++) { |
| if (members[i].getType() != IResource.FILE) { |
| children.add(members[i]); |
| } |
| } |
| return children.toArray(); |
| } catch (CoreException e) { |
| // this should never happen because we call #isAccessible before invoking #members |
| } |
| } |
| } |
| return new Object[0]; |
| } |
| |
| /* |
| * @see org.eclipse.jface.viewers.IStructuredContentProvider#getElements(java.lang.Object) |
| */ |
| @Override |
| public Object[] getElements(Object element) { |
| return getChildren(element); |
| } |
| |
| /* |
| * @see org.eclipse.jface.viewers.ITreeContentProvider#getParent(java.lang.Object) |
| */ |
| @Override |
| public Object getParent(Object element) { |
| if (element instanceof IResource) { |
| return ((IResource) element).getParent(); |
| } |
| return null; |
| } |
| |
| /* |
| * @see org.eclipse.jface.viewers.ITreeContentProvider#hasChildren(java.lang.Object) |
| */ |
| @Override |
| public boolean hasChildren(Object element) { |
| return getChildren(element).length > 0; |
| } |
| |
| /* |
| * @see org.eclipse.jface.viewers.IContentProvider#inputChanged |
| */ |
| @Override |
| public void inputChanged(Viewer viewer, Object oldInput, Object newInput) { |
| } |
| |
| /** |
| * Specify whether or not to show closed projects in the tree |
| * viewer. Default is to show closed projects. |
| * |
| * @param show boolean if false, do not show closed projects in the tree |
| */ |
| public void showClosedProjects(boolean show) { |
| showClosedProjects = show; |
| } |
| |
| } |